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I ROWELLQ Hinged Slate.

Patented Feb. 10, 1880.

UNITED STATES PATENT OFFICE.

HENRY L. HOWELL, 0F DAYTON, OHIO, ASSIGNOR TO GEORGE w. HOLDEN, OF SAME PLACE.

HINGED SLATE.

SPECIFICATION forming part of Letters Patent No. 224,306, dated February 10, 1880.

Application filed June 30, 1879. v

To all whom it may concern;

Be it known that I, HENRY L. RowELL, of Dayton, inthe county of- Montgomery and State of Ohio, have invented a new and use ful Improvement in Folding Slates, of which the following is a specification.

' The invention relates to the manner of hinging the frames, which is done by an elastic web the edges of which are held in metallic strips secured in slots of the frame by pins passing through the same.

The accompanying drawings are made part of my specification, and like letters of refer" ence on the difierent figures designate like parts.

Figure l is a View of the folding slate fully opened. Fig; 2 is a side and sectional view of the flexible hinge.

A A represent slates constructed in the usual manner, the wooden frames of which are joined together by a flexible hinge, B, the hinges being heldwithin mortises of the frame Gena trally between the sides of the frames are 1ongitudinal mortises, indicated by dotted lines 25 at the upper hinge, and into these mortises are secured, as before specified, the flexible hinges.

In the construction of the hinge I usean elastic web, 0. The edges are covered by me- 0 tallic strips 0, which are indented to secure them to the web. These are placed in the mortises, and are secured by pins passing through the frames and the metallic strips.

Havingthus fully described my invention, 5

what I desire to secure by Letters Patent is As a new article of manufacture, a folding slate joined together by an elastic web, 0, the edges of which are held in metallic strips 0,

and secured in the slots of the frames, sub- 40 stantially as described. r

' HENRY L. HOWELL.

Witnesses y B. PICKERING, J. J. BELVILLE. 

